Interested in 2.
Why not ramping UI?
Interested!
Interested in one.
Interesting. 2A is fine and matches the manufacturer's absolute maximum rating. If the heat path in the flashlight is good maybe you could drive it a little bit harder without issue, although maybe the meat of the matter is in the boost driver when operating with Ni-MH and alkalines. :???:
I remember having built a custom dedomed red XP-E2 SK98 (with decently shelved pill) driven at a hair above 2A, and it seemed to handle the heat well (and it certainly is a lot more impressive than the same host with stock driver and a blue XP-G3, could re-check this just a while ago). 
Valid question. Ramping was never part of the smaller AA/AAA Sofirn lights and it would mean a considerable break in consistency. However, there is a project ongoing to developing an SP10S Andúril version, providing the full potential of flexibility. I don't think Sofirn wants to put too much development work into SP10R since they have some more cool things about AA and AAA lights in mind, coming in the future. So, looking at things from a cost-wise side, keeping the UI more or less as is and simple, should result in both fast market launch and reasonable pricing.
By the way, talking about keeping things simple and (not) consistent :-P .... Barry and I have talked a lot back and forth about using strobe modes in SP10R. We discussed the (obsolete) SOS mode, the beacon mode and of course the bike strobe mode. However, in the end we came to the conclusion that it's best for a deep red EDC like SP10R to not use any strobe modes at all. Bottom line so far: SP10R will come without any strobe modes.
Woohoo! Interest rekindled. 
Glad to have you back on board, Lightbringer. 
I am interested in this light.
I think this is a wise decision :+1:
OK :+1:
Very interested. I love the xp-e2 photo red version and can only think the SST-20DR will be better. Even if it’s similar, I used mine today and they’re great lights. Thanks for making this happen.
Is there any point in the photo red xp-g3 and a reflector for a tiny flooder?
I’m interested. Thanks!
Interested
Actually, Barry and I were thinking already what other Sofirn flashlight could maybe benefit from SST20-DR. I suppose IF25A could be a nice host for a quad array with around 1.000lm deep red light but it takes a different (constant current) driver, ideally aiming 8A of regulated maximum current.
I’m interested.
Driving leds in parallel is 0K but not the best approach; over time the sharing of current among leds could unbalance. There are nice boost drivers available who could handle a quad in series at 2A with ease.
Gracias Barkuti. Do you have a link to one of these drivers? I'm not sure if Sofirn has ever used 3rd party drivers in their lights, though. Anyway, I will be glad to talk about this with them.
I hope this will be crazy overdriven the emitter if possible thanks.
A couple examples:
- http://kaidomain.com/Flashlight-DIY-and-Tools/Circuit-Board-Driver-Board/H2-C-22mm-2200mA-1-or-2-cell-Boost-Driver-Board-for-Cree-XHP35-XHP50-12V This driver is made by CDM, so Sofirn could ask the people of that company after it.
- https://www.aliexpress.com/item/4000046041955.html Convoy's 4S/12V boost driver. This has been discussed in Convoy XHP35 Driver Analysis / Testing / Schematic, where Agnelucio got the driver to much higher power.
Please note that since deep red emitters have quite a bit lower Vf, driving them the actual current ouput of these boost drivers could be increased to at least 3+A without difficulty. And much beyond if they were to change stuff like Agnelucio. :-)
Edit.- Remember: boost driver, all emitters in series receive the full current. You must think in terms of power. At 3+A driving current total Vf could be close to 10V and the drain from the battery will be noteworthy. No less than 10 or 15 A rated batteries, just in case.
Whether in this case they decide to use a driver like this or not is up to them, but it's time for they to get better buck and boost drivers. They also need some good buck ones, really.
Tue, 08/18/2020 - 14:53